Power apparatus



Dec. 28 1926. 1,612,043

I. W. NONNEMAN POWERTAPPARATUS Filed May 1.924 s Sheets-Sheet 1 wwkawguuw .251 WW5 )ZQLL/(m. idle/ 46,

Dec. 28 1926.

l. W. NONNEMAN POWER APPARATUS Filed May 13 1924 3 Sheets-Sheet 2I/EYIMEMTOZE v -flw; izqqru I Dec. 28, 1926. 1,612,043

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IRA W. NONNEMAN, F WARREN, GHIO, ASSIGNOR TO THE BURDEN COMPANY, OFVJABBEN, OHIO, A CORPORATION OF OHIO.

POWEB APPARATUS.

Application filed. May 13, 1824.

This invention relates to portable, power apparatus, particularly thatwhich is used for imparting a rotary motion to a driven object, such forexample as a thread cutter.

An object of my invention is the provision of a portable power apparatuswhich shall be comparatively light in weight, yet which is sufficientlyrigid to insure stability while operating under heavy loads.

Moreover my invention contemplates the provision of a device which maybe moved about as a unit and quickly adjusted to a driven device ortool, and which may be readily disengaged from the tool while inoperation. This is advantageous in that the driven device may, ifnecessary, be disconnected without stopping the motor.

A further object of my invention is the provision of a power apparatuswhich has a comparatively wide range of position with reference to thework, thus permitting satisfactory operation and facilitating adjustment without necessitating accurate positioning of the apparatus on theground with reference to the work.

The means for carrying out the above objects is shown in the preferredform in the accompanying drawings as embodying a carriage having a motormounted thereon 30 which is suitably geared to a shaft which extendstransversely thereof. The axis of the shaft forms a pivot about which apair of pivotally connected arms may swin One of these arms is providedwith means for permitting attachment to a driven tool and is suitablygeared to the motor in such manner as not to interfere with theinclependent movement of the arms while the motor is in operation.

The preferred embodiment of my invention is illustrated in the drawingswh rein Fig. 1 is a side elevation; Fig. 2 is an end elevation showingthe adaptation to a pipe cutting machine; Fig. 3 is a section on theline 33 in Fig. 1; Fig. 4 is a sect-ion on the line 4-4 in Fig. 2; Fig.5 is a section On the line 55 in Fig. 1 and Fig. 6 is a section on theline 66 in Fig. 5.

My invention is shown as mounted on a carriage embodying a platform 10which may be supported by traction wheels 11 and 12 by a swivel wheel 13respectively. The platform as shown supports a motor, 14 which furnishesdriving power for the ap parat-us.

Serial No. 713,119.

A. gear casing indicated in general at 15 supports a pinion shaft 16which may be coupled as at 17 to the armature shaft 18. A pinion 19rigid with the shaft 16 functions to rotate a gear 20 which is rigidlymounted on a shaft 21. As shown in Fig. 4, the shaft 21 is also mountedwithin the easing and has a bevel pinion 22 rigidly mounted thereon formeshing with a bevel gear 23 on the shaft 24. This shaft is partiallyjournaled by the gear casing and partially within a standard 25 as shownin Fig. 2.

The'shaft 24 provides a pivot upon which an arm indicated in general at30, is free to move. In the preferred form this arm comprises twocooperating members 81 and 32 which maybe joined by securing members insuch manner as to provide a hollow interior in which a sprocket chain 34is free to travel. The sprocket chain passes over sprocket wheels 35 and36 which are mounted on shafts 24 and 27 respectively.

The shaft 37 extends through the arm 30 and also through an armindicated in general at 40 and provides a pivot therefor. This lastmentioned arm may comprise separable sections 41 and 42 fastenedtogether by suitable securing members 43, so as to provide a hollowinterior within which a sprocket chain 44 may travel. This chain passesover wheels 45 and 46 at opposite ends of the arm 40. As shown the wheel45 is rigidly mounted on the shaft 37 while the wheel 46 has hubs 47which are journaled in the arm 40. A non-circular opening 48 extendsthrough the sprocket wheel and associated hubs to provide a toolreceiving socket. This opening, as shown in Fig. 1, is square incross-section.

In Fig. 2 T have. shown the use of my invention in connection with apipe cutting tool indicated in general at 50, which is adapted to beoperated uponrotation of a shaft having a square shank 51 which fitsinto the socket 48.

To operate a device made in accordance with my invention, the carriageis moved alongside the work as shown in Fig. 2, whereupon the arm 40 isswung about the shaft 37 as a pivot while the arm 30 is swung about theshaft 24 as a pivot until the socket 48 is aligned with the shank of thetool to be actuated. Thereupon the carriage is moved laterally until thetool shank enters the socket. l Vhen the tool is thus positioned,

the motor may be started whereupon the tool is caused to rotate byreason of the gearing and sprocket chain heretofore described. Therelatively movable arms which are employed for actuating the drivingsocket permit ready attachment to the shank of the operating toolwithout necessitating accurate positioning of the carriage withreference to the work. The absence of means for permitting lateralmovement of the arms with relation to the platform, prevents the toolsocket from being disengage-d inadvertent- 1y without moving the entirecarriage.

hen the apparatus is not in use, the arm may be lowered until the casingengages the platform adjacent the motor wherefore the arm may be loweredalongside the arm 30. This permits the carriage to be moved about as aunit, while the arms are always available for instant use without thenecessity for clutches and adjustable locking devices between the sourceof power and the driven socket.

I claim:

1. In a device of the character described the combination with aportable platform, of an electric motor mounted therein, a shaftextending transversely of the platform, reduction gearing operativelyconnecting the motor and the shaft, a hollow member pivotally mounted onthe shaft and having a transversely extending shaft journalled at thefree end thereof, said last mentioned shaft projecting laterally fromthe arm, means within the hollow member operatively connecting saidshafts, and tool engaging means pivotally mounted on the last namedshaft.

2. A device of the character described comprising in combination aportable platform, an electric motor mounted therein, a gear casingsupported by the platform and having gears therein operatively connectedwith the motor, a shaft projecting laterally from the casing, a hollowarm pivotally mounted on the shaft, a sprocket wheel within the arm andalso rigidly mounted on the shaft, a shaft at the free end of the armand projecting beyond the side thereof, a second hollow arm mounted onthe last named shaft, means associated with the second arm for engagingand operating a tool, and mechanism for effecting a positive drivingconnection between said shafts.

3. A device of the character described comprising in combination asupport, an electric motor mounted thereon, two hollow pivotallyconnected arms, tool holding means mounted on one of the arms, the otherarm being pivotally mounted above the support in such manner that thearms may be swung downwar lly and rested on the support when not in use,and an articulated driving means within the hollow arms.

4. A device of the character described comprising in combination aportable platform, an electric motor thereon, a shaft supported by theplatform and extending transversely thereof, means operativelyconnecting the shaft with the motor, a pair of hollow arms, one beinglonger than the other and pivotally connected thereto, the longer armbeing mounted on said shaft, said arms being free to swing downwardlybeside the motor and to reston the platform when not in use, a toolengaging member carried by the short arm, and means extending throughthe pivotal connection of said arm and also through said shaft foroperatively connecting tool engaging member with the motor.

5. A device of the character described comprising in combination, aplatform, an electric motor mounted thereon, a gear casing outside themotor, reduction gearing within the casing and operatively connected tothe motor, a shaft journalled in the casing and projecting laterallytherefrom adjacentone end of the platform, a hollow arm pivotallymounted on the shaft, a second shaft journalled in said arm adjacent thefree end thereof, said last named shaft projecting beyond the side ofthe arm, a hollow member pivotally mounted on the last named shaftoutside the arm, tool engaging means disposed within said memberadjacent the outer end thereof, means within the arm operativelyconnecting said shafts, and means within the member for operativelyconnecting the second named shaft with the tool engaging member.

6. A device of the character described, comprising in combination aportable platform, an electric motor mounted thereon, a shaft extendingtransversely of the platform and operatively connected to the motor, twoarms mounted to swing in a vertical plane, one of said arms beingpivotally mounted on the shaft, and each-of said arms having such lengththat they may rest upon the platform when not in use, tool engagingmeans carried by one of the arms, and mechanism extending through thearms for operatively connecting said means to said shaft.

7. A device of the character described comprising a wheeled platform, amotor thereon adjacent one side of the platform, a gear casing adjacentthat side of the platform and longitudinally aligned with the motor, astandard adjacent the other side of the platform and laterally alignedwith the gear casing, a lateral shaft carried by the standard and gearcasing, gearing between said lateral and the motor shaft, an arm pivotedon said lateral shaft, a second arm pivoted to the arm first mentioned,a rotary member carried by the final arm and means connecting it withthe lateral shaft.

In testimony whereof, I hereunto affix my signature.

IRA \V. NONNEMAN.

